Open redirect: ringaraja.net

 1name: "Open redirect: ringaraja.net"
 2description: |
 3    Message contains use of the ringaraja.net open redirect. This has been exploited in the wild.
 4type: "rule"
 5severity: "medium"
 6source: |
 7  type.inbound
 8  and any(body.links,
 9          .href_url.domain.root_domain == "ringaraja.net"
10          and .href_url.path =~ "/portleti/katalogponudnikov/result.asp"
11          and strings.icontains(.href_url.query_params, 'url=')
12          // negate use of the redirect by ringaraja
13          and not regex.icontains(.href_url.query_params,
14                                  'url=[^&]*ringaraja\.net'
15          )
16  )
17  
18  // negate highly trusted sender domains unless they fail DMARC authentication
19  and (
20    (
21      sender.email.domain.root_domain in $high_trust_sender_root_domains
22      and not headers.auth_summary.dmarc.pass
23    )
24    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
25  )  
26attack_types:
27  - "Credential Phishing"
28  - "Malware/Ransomware"
29tactics_and_techniques:
30  - "Open redirect"
31detection_methods:
32  - "Sender analysis"
33  - "URL analysis"
34id: "4d9594f4-1e96-5afd-a575-8a16d2d79698"